CVE-2025-39944 (GCVE-0-2025-39944)

Vulnerability from cvelistv5 – Published: 2025-10-04 07:31 – Updated: 2026-05-11 21:39
VLAI
Title
octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()
Summary
In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp() The original code relies on cancel_delayed_work() in otx2_ptp_destroy(), which does not ensure that the delayed work item synctstamp_work has fully completed if it was already running. This leads to use-after-free scenarios where otx2_ptp is deallocated by otx2_ptp_destroy(), while synctstamp_work remains active and attempts to dereference otx2_ptp in otx2_sync_tstamp(). Furthermore, the synctstamp_work is cyclic, the likelihood of triggering the bug is nonnegligible. A typical race condition is illustrated below: CPU 0 (cleanup) | CPU 1 (delayed work callback) otx2_remove() | otx2_ptp_destroy() | otx2_sync_tstamp() cancel_delayed_work() | kfree(ptp) | | ptp = container_of(...); //UAF | ptp-> //UAF This is confirmed by a KASAN report: BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800aa09a18 by task bash/136 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? __pfx_read_tsc+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 run_timer_softirq+0xd1/0x190 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 1: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 otx2_ptp_init+0xb1/0x860 otx2_probe+0x4eb/0xc30 local_pci_probe+0xdc/0x190 pci_device_probe+0x2fe/0x470 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __driver_attach+0xd2/0x310 bus_for_each_dev+0xed/0x170 bus_add_driver+0x208/0x500 driver_register+0x132/0x460 do_one_initcall+0x89/0x300 kernel_init_freeable+0x40d/0x720 kernel_init+0x1a/0x150 ret_from_fork+0x10c/0x1a0 ret_from_fork_asm+0x1a/0x30 Freed by task 136: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 otx2_ptp_destroy+0x38/0x80 otx2_remove+0x10d/0x4c0 pci_device_remove+0xa6/0x1d0 device_release_driver_internal+0xf8/0x210 pci_stop_bus_device+0x105/0x150 pci_stop_and_remove_bus_device_locked+0x15/0x30 remove_store+0xcc/0xe0 kernfs_fop_write_iter+0x2c3/0x440 vfs_write+0x871/0xd70 ksys_write+0xee/0x1c0 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the delayed work item is properly canceled before the otx2_ptp is deallocated. This bug was initially identified through static analysis. To reproduce and test it, I simulated the OcteonTX2 PCI device in QEMU and introduced artificial delays within the otx2_sync_tstamp() function to increase the likelihood of triggering the bug.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2958d17a898416c6193431676f6130b68a2cb9fc , < 2786879aebf363806a13d41e8d5f99202ddd23d9 (git)
Affected: 2958d17a898416c6193431676f6130b68a2cb9fc , < d2cfefa14ce8137b17f99683f968bebf134b6a48 (git)
Affected: 2958d17a898416c6193431676f6130b68a2cb9fc , < ff27e23b311fed4d25e3852e27ba693416d4c7b3 (git)
Affected: 2958d17a898416c6193431676f6130b68a2cb9fc , < 5ca20bb7b4bde72110c3ae78423cbfdd0157aa36 (git)
Affected: 2958d17a898416c6193431676f6130b68a2cb9fc , < f8b4687151021db61841af983f1cb7be6915d4ef (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.154 , ≤ 6.1.* (semver)
Unaffected: 6.6.108 , ≤ 6.6.* (semver)
Unaffected: 6.12.49 , ≤ 6.12.* (semver)
Unaffected: 6.16.9 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "2786879aebf363806a13d41e8d5f99202ddd23d9",
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            },
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.154",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.108",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.49",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.154",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.108",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.49",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.16.9",
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                }
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()\n\nThe original code relies on cancel_delayed_work() in otx2_ptp_destroy(),\nwhich does not ensure that the delayed work item synctstamp_work has fully\ncompleted if it was already running. This leads to use-after-free scenarios\nwhere otx2_ptp is deallocated by otx2_ptp_destroy(), while synctstamp_work\nremains active and attempts to dereference otx2_ptp in otx2_sync_tstamp().\nFurthermore, the synctstamp_work is cyclic, the likelihood of triggering\nthe bug is nonnegligible.\n\nA typical race condition is illustrated below:\n\nCPU 0 (cleanup)           | CPU 1 (delayed work callback)\notx2_remove()             |\n  otx2_ptp_destroy()      | otx2_sync_tstamp()\n    cancel_delayed_work() |\n    kfree(ptp)            |\n                          |   ptp = container_of(...); //UAF\n                          |   ptp-\u003e //UAF\n\nThis is confirmed by a KASAN report:\n\nBUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0\nWrite of size 8 at addr ffff88800aa09a18 by task bash/136\n...\nCall Trace:\n \u003cIRQ\u003e\n dump_stack_lvl+0x55/0x70\n print_report+0xcf/0x610\n ? __run_timer_base.part.0+0x7d7/0x8c0\n kasan_report+0xb8/0xf0\n ? __run_timer_base.part.0+0x7d7/0x8c0\n __run_timer_base.part.0+0x7d7/0x8c0\n ? __pfx___run_timer_base.part.0+0x10/0x10\n ? __pfx_read_tsc+0x10/0x10\n ? ktime_get+0x60/0x140\n ? lapic_next_event+0x11/0x20\n ? clockevents_program_event+0x1d4/0x2a0\n run_timer_softirq+0xd1/0x190\n handle_softirqs+0x16a/0x550\n irq_exit_rcu+0xaf/0xe0\n sysvec_apic_timer_interrupt+0x70/0x80\n \u003c/IRQ\u003e\n...\nAllocated by task 1:\n kasan_save_stack+0x24/0x50\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x7f/0x90\n otx2_ptp_init+0xb1/0x860\n otx2_probe+0x4eb/0xc30\n local_pci_probe+0xdc/0x190\n pci_device_probe+0x2fe/0x470\n really_probe+0x1ca/0x5c0\n __driver_probe_device+0x248/0x310\n driver_probe_device+0x44/0x120\n __driver_attach+0xd2/0x310\n bus_for_each_dev+0xed/0x170\n bus_add_driver+0x208/0x500\n driver_register+0x132/0x460\n do_one_initcall+0x89/0x300\n kernel_init_freeable+0x40d/0x720\n kernel_init+0x1a/0x150\n ret_from_fork+0x10c/0x1a0\n ret_from_fork_asm+0x1a/0x30\n\nFreed by task 136:\n kasan_save_stack+0x24/0x50\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3a/0x60\n __kasan_slab_free+0x3f/0x50\n kfree+0x137/0x370\n otx2_ptp_destroy+0x38/0x80\n otx2_remove+0x10d/0x4c0\n pci_device_remove+0xa6/0x1d0\n device_release_driver_internal+0xf8/0x210\n pci_stop_bus_device+0x105/0x150\n pci_stop_and_remove_bus_device_locked+0x15/0x30\n remove_store+0xcc/0xe0\n kernfs_fop_write_iter+0x2c3/0x440\n vfs_write+0x871/0xd70\n ksys_write+0xee/0x1c0\n do_syscall_64+0xac/0x280\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n...\n\nReplace cancel_delayed_work() with cancel_delayed_work_sync() to ensure\nthat the delayed work item is properly canceled before the otx2_ptp is\ndeallocated.\n\nThis bug was initially identified through static analysis. To reproduce\nand test it, I simulated the OcteonTX2 PCI device in QEMU and introduced\nartificial delays within the otx2_sync_tstamp() function to increase the\nlikelihood of triggering the bug."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:39:26.642Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2786879aebf363806a13d41e8d5f99202ddd23d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/d2cfefa14ce8137b17f99683f968bebf134b6a48"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff27e23b311fed4d25e3852e27ba693416d4c7b3"
        },
        {
          "url": "https://git.kernel.org/stable/c/5ca20bb7b4bde72110c3ae78423cbfdd0157aa36"
        },
        {
          "url": "https://git.kernel.org/stable/c/f8b4687151021db61841af983f1cb7be6915d4ef"
        }
      ],
      "title": "octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39944",
    "datePublished": "2025-10-04T07:31:06.339Z",
    "dateReserved": "2025-04-16T07:20:57.148Z",
    "dateUpdated": "2026-05-11T21:39:26.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-39944",
      "date": "2026-07-23",
      "epss": "0.00138",
      "percentile": "0.03651"
    },
    "microsoft_vex": {
      "current_release_date": "2025-10-05T01:03:24.000Z",
      "cve": "CVE-2025-39944",
      "id": "msrc_CVE-2025-39944",
      "initial_release_date": "2025-10-02T00:00:00.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-39944.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39944\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-04T08:15:47.480\",\"lastModified\":\"2026-06-17T09:18:52.977\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nocteontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()\\n\\nThe original code relies on cancel_delayed_work() in otx2_ptp_destroy(),\\nwhich does not ensure that the delayed work item synctstamp_work has fully\\ncompleted if it was already running. This leads to use-after-free scenarios\\nwhere otx2_ptp is deallocated by otx2_ptp_destroy(), while synctstamp_work\\nremains active and attempts to dereference otx2_ptp in otx2_sync_tstamp().\\nFurthermore, the synctstamp_work is cyclic, the likelihood of triggering\\nthe bug is nonnegligible.\\n\\nA typical race condition is illustrated below:\\n\\nCPU 0 (cleanup)           | CPU 1 (delayed work callback)\\notx2_remove()             |\\n  otx2_ptp_destroy()      | otx2_sync_tstamp()\\n    cancel_delayed_work() |\\n    kfree(ptp)            |\\n                          |   ptp = container_of(...); //UAF\\n                          |   ptp-\u003e //UAF\\n\\nThis is confirmed by a KASAN report:\\n\\nBUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0\\nWrite of size 8 at addr ffff88800aa09a18 by task bash/136\\n...\\nCall Trace:\\n \u003cIRQ\u003e\\n dump_stack_lvl+0x55/0x70\\n print_report+0xcf/0x610\\n ? __run_timer_base.part.0+0x7d7/0x8c0\\n kasan_report+0xb8/0xf0\\n ? __run_timer_base.part.0+0x7d7/0x8c0\\n __run_timer_base.part.0+0x7d7/0x8c0\\n ? __pfx___run_timer_base.part.0+0x10/0x10\\n ? __pfx_read_tsc+0x10/0x10\\n ? ktime_get+0x60/0x140\\n ? lapic_next_event+0x11/0x20\\n ? clockevents_program_event+0x1d4/0x2a0\\n run_timer_softirq+0xd1/0x190\\n handle_softirqs+0x16a/0x550\\n irq_exit_rcu+0xaf/0xe0\\n sysvec_apic_timer_interrupt+0x70/0x80\\n \u003c/IRQ\u003e\\n...\\nAllocated by task 1:\\n kasan_save_stack+0x24/0x50\\n kasan_save_track+0x14/0x30\\n __kasan_kmalloc+0x7f/0x90\\n otx2_ptp_init+0xb1/0x860\\n otx2_probe+0x4eb/0xc30\\n local_pci_probe+0xdc/0x190\\n pci_device_probe+0x2fe/0x470\\n really_probe+0x1ca/0x5c0\\n __driver_probe_device+0x248/0x310\\n driver_probe_device+0x44/0x120\\n __driver_attach+0xd2/0x310\\n bus_for_each_dev+0xed/0x170\\n bus_add_driver+0x208/0x500\\n driver_register+0x132/0x460\\n do_one_initcall+0x89/0x300\\n kernel_init_freeable+0x40d/0x720\\n kernel_init+0x1a/0x150\\n ret_from_fork+0x10c/0x1a0\\n ret_from_fork_asm+0x1a/0x30\\n\\nFreed by task 136:\\n kasan_save_stack+0x24/0x50\\n kasan_save_track+0x14/0x30\\n kasan_save_free_info+0x3a/0x60\\n __kasan_slab_free+0x3f/0x50\\n kfree+0x137/0x370\\n otx2_ptp_destroy+0x38/0x80\\n otx2_remove+0x10d/0x4c0\\n pci_device_remove+0xa6/0x1d0\\n device_release_driver_internal+0xf8/0x210\\n pci_stop_bus_device+0x105/0x150\\n pci_stop_and_remove_bus_device_locked+0x15/0x30\\n remove_store+0xcc/0xe0\\n kernfs_fop_write_iter+0x2c3/0x440\\n vfs_write+0x871/0xd70\\n ksys_write+0xee/0x1c0\\n do_syscall_64+0xac/0x280\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n...\\n\\nReplace cancel_delayed_work() with cancel_delayed_work_sync() to ensure\\nthat the delayed work item is properly canceled before the otx2_ptp is\\ndeallocated.\\n\\nThis bug was initially identified through static analysis. To reproduce\\nand test it, I simulated the OcteonTX2 PCI device in QEMU and introduced\\nartificial delays within the otx2_sync_tstamp() function to increase the\\nlikelihood of triggering the bug.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2958d17a898416c6193431676f6130b68a2cb9fc\",\"lessThan\":\"2786879aebf363806a13d41e8d5f99202ddd23d9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2958d17a898416c6193431676f6130b68a2cb9fc\",\"lessThan\":\"d2cfefa14ce8137b17f99683f968bebf134b6a48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2958d17a898416c6193431676f6130b68a2cb9fc\",\"lessThan\":\"ff27e23b311fed4d25e3852e27ba693416d4c7b3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2958d17a898416c6193431676f6130b68a2cb9fc\",\"lessThan\":\"5ca20bb7b4bde72110c3ae78423cbfdd0157aa36\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2958d17a898416c6193431676f6130b68a2cb9fc\",\"lessThan\":\"f8b4687151021db61841af983f1cb7be6915d4ef\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.1\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.1\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.154\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.108\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.49\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16.9\",\"lessThanOrEqual\":\"6.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.17\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.1.154\",\"matchCriteriaId\":\"A57D06D5-F248-4BF0-8580-9873AB71028A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.108\",\"matchCriteriaId\":\"A7E8EAEE-7731-4996-9578-696255D61EA2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.49\",\"matchCriteriaId\":\"CAA033E9-A2C5-4976-A83E-9804D8FB827F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.16.9\",\"matchCriteriaId\":\"638DD910-1189-4F5E-98BF-2D436B695112\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"327D22EF-390B-454C-BD31-2ED23C998A1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C730CD9A-D969-4A8E-9522-162AAF7C0EE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"39982C4B-716E-4B2F-8196-FA301F47807D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"340BEEA9-D70D-4290-B502-FBB1032353B1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"47E4C5C0-079F-4838-971B-8C503D48FCC2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A4516A6-C12E-42A4-8C0E-68AEF3264504\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2786879aebf363806a13d41e8d5f99202ddd23d9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5ca20bb7b4bde72110c3ae78423cbfdd0157aa36\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d2cfefa14ce8137b17f99683f968bebf134b6a48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f8b4687151021db61841af983f1cb7be6915d4ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff27e23b311fed4d25e3852e27ba693416d4c7b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:25:16+00:00",
      "cve": "CVE-2025-39944",
      "id": "CVE-2025-39944",
      "initial_release_date": "2025-10-04T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-39944.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.